CREATE TABLE IF NOT EXISTS public.app_settings (
  id           text         PRIMARY KEY DEFAULT 'singleton',
  group_label  text         NOT NULL DEFAULT 'Cliente',
  updated_at   timestamptz  NOT NULL DEFAULT now()
);

ALTER TABLE public.app_settings ENABLE ROW LEVEL SECURITY;

CREATE POLICY "all_app_settings" ON public.app_settings
  FOR ALL USING (auth.uid() IS NOT NULL)
  WITH CHECK (auth.uid() IS NOT NULL);

INSERT INTO public.app_settings (id, group_label)
VALUES ('singleton', 'Cliente')
ON CONFLICT (id) DO NOTHING;